The right answers are A, B and D
The emission of a molecule of O2 requires the oxidation of 2 molecules of H2O; there are 4 electrons transferred.
2 H2O ----> O2 + 4 H + + 4 e-.
In photosynthesis, it is not an ADP synthase but an ATP synthase. It is an enzymatic protein complex found in the mitochondrial ridges, the thylakoid membrane, and the plasma membrane of bacteria and archaea. The role of this membrane protein is to synthesize adenosine triphosphate (ATP) from the proton electrochemical gradient maintained by the respiratory chain and adenosine diphosphate (ADP).
Photosynthesis comprises two sets of distinct reactions:
* Reactions directly dependent on light, called "light phase" or "light phase".
* Reactions not directly dependent on light, called "dark phase", "dark phase" or "biochemical phase".
<span>The robins and sparrows living together in the same tree in a forest ecosystem would represent an ecological niche. A ecological niche is the interactions between animals who live close to or with each other. These animals can be prey, competitors for food or be neutral towards each other.</span>
Answer:
Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present. ... A mechanical wave transfers energy through matter.
Explanation:
Gram staining is a widely used technique designed to distinguish between the bacteria on the basis of the composition of the cell wall of the bacteria.
The basis of differentiation is the color of the bacteria they attain after staining technique is performed that is gram-positive bacteria remain deep blue in color while gram-negative bacteria appear pinkish-red in color.
If the culture of the bacteria on which the test to be performed is of more age that is more than 24 hours of age then the bacteria cells lose their ability to retain the stain mainly the gram-positive bacteria. Also, the culture gets damaged after 24 hours.
Thus, fresh cultures are used for staining.